How should I go about setting up a staging environment on Hatchbox w/ DigitalOcean?

So I've set myself up with Hatchbox on DigitalOcean. I don't think I want to deploy seperate environments on the same server. But if I create an entirely seperate cluster I am afraid of racking up costs (ideally I'd want costs of the staging environment to be negligible).

Should I just replicate the steps I took to set up my production cluster for my staging cluster and somehow "turn off" these droplets when I do not use them to avoid racking up costs? Would this approach work?

Generally for staging, you can just deploy the app to a single server to save money compared to the production fully load balanced cluster.